[closo-B₁₀H₈-1-CN-10-Azinium]^- Anions: Photoactive Heteroditopic Ligands for Metal Complexes.

ABSTRACT: A new class of rigid, photoactive heteroditopic anionic ligands based on the 1,10-disubstituted [closo-B₁₀H₁₀]^2- anion was designed and six of these compounds were obtained from [closo-B₁₀H₁₀]^2- in three steps with yields in the range of 25-30%. The design includes two apical substituents, a metal coordinating cyano group and an azinium (4-cyanopyridinium, 4,4'-bipyridinium, pyrazinium, pyrimidinium, and pyridazinium), which provides a secondary binding site. The azinium substituent is involved in an efficient intramolecular charge transfer process and compensates one of the two delocalized negative charges of the boron cluster. The compounds exhibit intramolecular CT bands with maxima in the range of 340-410 n

SUBMITTER: Jakubowski R 

PROVIDER: S-EPMC11423411 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature